Interesting question. I think it has been brought up before here, and tastes do change. My first choice would be the bent bulldog, as I have 3 of those. I like the mouth feel of the wide bits they have. The bent Rhodesian would be next in line. After that, I like the Danish freehand shapes.
I am more interested in the whole package, and if a pipe speaks to me, I have to acquire it, regardless of the shape. Probelm is, they all speak to me, bwahahaha.